NH Safety Socket

Since a serrated conical disc spring washer is installed, this does not scratch fastened members like conventional spring washers.

[Features]
· A 12.9 high strength bolt with washer included.
· The bolt washer is also reinforced via special processing.
· Since a serrated conical disc spring washer is installed, this does not scratch fastened members like conventional spring washers.
· Stable thanks to the low torque coefficient.
· The serrated conical disc spring washer does not co-rotate with bolts, helping mitigate friction on the washer.
· The parts have been integrated.
· A washer is included in the bolt, so they can be handled as one part.